I'm pleased to offer for sale this very nice beautiful B serial Tudor Big Block Chronograph ref. 79170 with its original BLack dial! This watch comes with its very nice original BLack colour dial, which looks amazing and lovely!! It is a rare dial in BLack because normally we only see silver dial or silver dial Big Block chronograph. The original BLack dial is simply flawless and clean. The original case is simply nice and strong. It is a B4 XXXX serial case and the number engraved between the lugs are clearly visible and authentic. It also comes with its original solid link TUDOR oyster bracelet ref. 7836O and its original correct end pieces ref. 589. Guarantee 1OO% authentic Rolex/Tudor Big Block Chronograph 79170.